Physostegia virginiana, the obedient plant. There are two colors, white which is called 'Crown of Snow'. My white ones bloomed in the middle of August.
Pink which is called 'Rose Queen'. And yes they are obedient.. they have the peculiar trait of remaining in place while rearranging their tiny blooms. My pink ones are in full bloom right now.
I played around with the blooms so that you can see that they are indeed maneuverable. No hocus pocus, no photo shop..they really are obedient.
This is a zone three perennial, it spreads a tad, by seeds and runners. As you can see they thrive on my no special weeding or watering regimen, which borders on total neglect. They are beautiful survivors! I think my more relaxed carefree gardening efforts yielded some great photo opportunities over the summer, I rather enjoyed my not so perfect wild gardens:)